How do find the grams of CO2?

Question

The combustion of methane forms carbon dioxide water

CH4+ 2O2----- CO2+ 2H2O

How many grams of CO2 are formed for every gram of CH4 that combusts?

Answer 1

Since CH4 and CO2 are related in the equation 1:1  then 1 mole of CH4 ( 16 grams ) yields 1 mole ( 44 grams ) of CO2

so 14 grams /44 grams = 1 gram /X    solving for X = 2.75 grams

so 2.75 grams of CO2 are formed for every 1 gram of CH4 combusted

Answer 2

CH4 .....12+4 = 16 g/mol

CO2..... 12+32 = 44g/mol

44/16 = 2.75g of CO2 are formed per gram of CH4